Adding-machine.



J. D. WARD, DEC'D.

L. H. WARD, ADMINISTRATRIX.

ADDING MACHINE.

APPLICATION FILED AUG. 23, 1913.

1 109 378, Patented Sept. 1, 1914.

ATTORNEYS THE MORRIS PETERS CO..PHUTD-LITHO..WASHING1`0N, D, C.

JOHN D. WARD, DECEASED, LATE OF BUFFALO, NEW YORK,

BY LILLIAN H. VIARD,

ADMINISTRATRIX, OF BUFFALO, NEW YORK..

ADDING-MACHINE.

Specification of Letters Patent.

Patented Sept. 1, 1914.

Application filed August 23, 1813. Serial No. 786,293.

To all whom t may concern Beit known that I, LILLIAN H. VVAED, a citizen of the United States, and a resident of Buffalo, in the county of Erie and State of.-N ew York, am administratrix of the vestate of JOHN D.y WARD, deceased, late a citizen of the United' States and a resident of-Buffalo', in the county of Erie and State of'New York, as by reference to the. original letters of administration hereto annexed will more fully appear, who did in his lifetime inventl certain new and useful Improvements in Adding-Machines, vof which the following lisa full, clear, andexact description.

This inventionl relates to improvements in adding machines, Iand has for an object to `provide an improved simple, quick, operating structure for [adding any suml desired.

Another object of the invention is to provide `an improved vchain structure which is designed to be moved a certain distance when adding a particular number, whereby the operator can observe at all times the operation of the various parts and may know whether or not the movement of the chain is correct.

A still further object of the invention is to provide an adding machine with chains formed withI numbered tabs and co-acting means for raising the same so as to extend substantially normal to the chain in order to be grasped and operated by the operator.l

In carrying out the object of the invention a suitable frame is provided: in which are provided upper and lower series of sprocket wheels designed to receive an improved form of chain having numbered tags or tabs arranged thereon, together with means for raising the tabs to a position normal to the chain when the tabscome opposite the front opening of the housing. 1n this way any particular tab may be engaged and pulled for any desired number of spaces and thus add to a given figure any number. The chains are associated with means for causing a proper transfer at the right time in order that' any. chain operated may be freely moved for the required distance without considering whether or not a transfer is to be made.

In the accompanying drawings Figure 1 is a transverse vertical section through an embodiment of the invention, the same being taken on line 2&2 of Fig. 2; Fig. 2 is a face view of an embodiment of the invention;

vthrough an aperture 12 so Fig. 3 is a sectional view through Fig. 1 approximately on line 3 3; Fig. 4 is a detailed perspective view of part of one of the number chains; Fig. 5 is a centrally vertical section through a section of one of the number chains; Fig. 6 is a detailed perspective view of one of the number tabs.

Referring to the accompanying drawings by numeral 1 indicates a base of any desired kind to which is secured a housing 2 formed of any desired material, as for instance metal. The housing 2 is provided with a face opening 3 and a series of numeral openings 4 at the top. Arranged beneath the face opening 3 is a plate 5 over which the various chains 6 are passed, as shown in Fig. 1. At the lower end of housing 2 a plurality of sprocket wheels 7 are arranged and supported by a suit-able shaft 8 so as to freely rotate independently, whereby each of the chains 6 may be independently moved. At the upper partof Jthe housing 2 a plurality of sprocket wheels 9 are provided for accommodating' the chains 6 so as to allow the same to freely move. Rigidly secured to each of the sprocket wheels 9 is a gear wheel 10 having ten teeth arranged thereon. Also rigidly secured to each of the sprocket wheels 9 is a spring catch 11 extending as to engage one of the teeth of gear wheel 10 whenever permitted so as to transfer the motion from any particular sprocket wheel to the next succeeding wheel. Division plates or disks 13 are arranged between the gear wheel 10 and the next succeeding sprocket wheel 9 so as to normally hold the spring catch 11 out of engagement with gear wheel 10 until the spring catch 1l comes opposite the notch 14. The notch 14 is only of a suflicient length to permit catch 11 to rotate gear wheel 10 the distance of one link and as there is only one notch 14 in the disk 13 it will require a complete revolution of the lower sprocket wheel to cause the next higher sprocket wheel to be moved one tenth of a revolution. It is, of course, understood that the disks 13 are rigidly secured to shaft 15 and shaft 15 is in turn rigidly secured to the casing or housing 2 while the sprocket wheels are all loosely mounted on shaft 15.

Eachof the chains 6 is formed as shown in Figs. 4, 5 and 6, the same being provided with links 16 which are connected by link sections 17. Pivotally connected with each of the links 16 is a number tab 18 which is bifurcated so as to straddle part of the link connection 17 and have the depending portions 19 looped around the ends of the respective links so that the extreme end of extension 19 will form projections 2O and V21. The projections 20 and 21 are arranged to project beneath the chain, as shown in Fig. 5, when the tabs 1S are lying against the links 1G. However, as the chain leaves the sprocket wheels 9 the extensions 2O and il engage the upper edge of plate 5 and cause the tabs 18 to be raised to a position substantially normal to the chain and remain in that position until the chain moves of of the plate This provides handholes for an operator whereby the operator may freely and quickly move any chain desired for any desired distance.

Arranged on the plate 5 are numbers which appear through the links 1G, as clearly shown in Fig. Q, so as to guide a person in moving the chain, whereby the chain may be moved any desired distance, as for instance, six spaces, one space, or any other number of spaces, according to the number designed to be added to the numbers in openings 41. It will be observed that the tabs 18 are lying flat against the chain when they appear op posite openings 4r, but as soon as they move therefrom they are raised'to an upstanding position. lf it is desired to add four to the units column shown in Fig. Q any of the tabs 1S are grasped and pulled for four spaces, whereupon the numeral siX will appear in the iirst opening of the series of openings 4. 'lf numeral G was to appear in the opening it instead of the numeral Q and the units chain was pulled five spaces the numeral 1 would appear in the first opening and the catch 11 would cause the tens Wheel to rotate one tenth of a revolution and therefore advance the second or tens chain one number.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is In an adding machine of the. class described, a casing formed with a row of openings, a sprocket wheel arranged in said casing so that part of the same will appear opposite said openings, a chain for each of said sprocket wheels, a pivotally mounted number tab on eachr of said chains designed to be brought successively past said openings, each or' said tabs being formed with a projection and means in said housing engaging said projections for moving the tabs to a position substantially normal to the links after the links have passed said row of openings, whereby said tabs may be grasped and said chains moved to any desired extent.

In testimony whereof I have signed my name to this speciiication in the presence of two subscribing witnesses.

LILLIAN H. VARD, As admz'nfz'stfraftm'm of the estate of John D.

Ward, deceased.

lVitnesses z Ronan" M. Cono, Jr., lViLLiAM H. BIREHOLDT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. CJ 

